Method for preparing reversible addition-fragmentation chain transfer emulsion polymerization
A chain scission chain transfer and emulsion polymerization technology, which is applied in the preparation field of reversible addition chain scission chain transfer emulsion polymerization, can solve the problems of slow addition instead of direct addition before reaction, long reaction inhibition period, and uncontrolled molecular weight, etc. To achieve the effects of simplifying process equipment, saving reaction time, and short reaction polymerization inhibition period
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[0037] Example 1:
[0038] Add 0.9 g of amphiphilic macromolecule reversible addition chain scission chain transfer reagent (1), 40 g of water, and 10 g of styrene into the reactor, stir and mix, stir, bubbling nitrogen for 30 minutes, heating to 70°C, 0.005 g of ammonium persulfate was added to initiate polymerization for 2 hours.
Example Embodiment
[0039] Example 2:
[0040] Add 0.1 g of amphiphilic macromolecule reversible addition chain scission chain transfer reagent (2), 50 g of water, and 1 g of styrene into the reactor, stir and mix, stir, bubbling with nitrogen for 20 minutes, heating to 70°C, 0.005 g of potassium persulfate was added to initiate polymerization for 1 hour.
Example Embodiment
[0041] Example 3:
[0042] Add 2.5 grams of amphiphilic macromolecule reversible addition chain scission chain transfer reagent (2), 25 grams of water, and 20 grams of styrene into the reactor, stir and mix, stir, and blow nitrogen for 30 minutes, and heat to 70°C. 0.03 g of potassium persulfate was added to initiate polymerization for 2 hours.
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